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* Added arch_debug_contains_call() function that returns wether or not

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a call chain contains a specific symbol (or address).
* Added a new KDL command "calling" that you can use to get a list of
  threads that have a specific function in their call chain.
* Removed extraneous white space.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24594 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2008-03-26 17:08:51 +00:00
parent c32f787401
commit 758962ec3b
5 changed files with 117 additions and 16 deletions
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5
headers/private/kernel/arch/debug.h
View File

@ -1,5 +1,5 @@
/*
* Copyright 2005, Axel Dörfler, axeld@pinc-software.de.
* Copyright 2005-2008, Axel Dörfler, axeld@pinc-software.de.
* Distributed under the terms of the MIT License.
*
* Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
@ -12,6 +12,7 @@
#include <SupportDefs.h>
struct kernel_args;
struct thread;
#ifdef __cplusplus
@ -20,6 +21,8 @@ extern "C" {
status_t arch_debug_init(kernel_args *args);
void *arch_debug_get_caller(void);
bool arch_debug_contains_call(struct thread *thread, const char *symbol,
addr_t start, addr_t end);
void arch_debug_save_registers(int *);
#ifdef __cplusplus

14
src/system/kernel/arch/m68k/arch_debug.cpp
View File

@ -1,5 +1,5 @@
/*
* Copyright 2003-2007, Haiku Inc. All rights reserved.
/*
* Copyright 2003-2008, Haiku Inc. All rights reserved.
* Distributed under the terms of the MIT License.
*
* Authors:
@ -179,7 +179,7 @@ return 0;
kprintf("stack trace for thread 0x%lx \"%s\"\n", thread->id,
thread->name);
kprintf(" kernel stack: %p to %p\n",
kprintf(" kernel stack: %p to %p\n",
(void *)thread->kernel_stack_base,
(void *)(thread->kernel_stack_base + KERNEL_STACK_SIZE));
if (thread->user_stack_base != 0) {
@ -264,6 +264,14 @@ arch_debug_save_registers(int *regs)
}
bool
arch_debug_contains_call(struct thread *thread, const char *symbol,
addr_t start, addr_t end)
{
return false;
}
void *
arch_debug_get_caller(void)
{

14
src/system/kernel/arch/ppc/arch_debug.cpp
View File

@ -1,5 +1,5 @@
/*
* Copyright 2003-2006, Haiku Inc. All rights reserved.
/*
* Copyright 2003-2008, Haiku Inc. All rights reserved.
* Distributed under the terms of the MIT License.
*
* Authors:
@ -177,7 +177,7 @@ return 0;
kprintf("stack trace for thread 0x%lx \"%s\"\n", thread->id,
thread->name);
kprintf(" kernel stack: %p to %p\n",
kprintf(" kernel stack: %p to %p\n",
(void *)thread->kernel_stack_base,
(void *)(thread->kernel_stack_base + KERNEL_STACK_SIZE));
if (thread->user_stack_base != 0) {
@ -270,6 +270,14 @@ arch_debug_save_registers(int *regs)
}
bool
arch_debug_contains_call(struct thread *thread, const char *symbol,
addr_t start, addr_t end)
{
return false;
}
void *
arch_debug_get_caller(void)
{

71
src/system/kernel/arch/x86/arch_debug.cpp
View File

@ -1,5 +1,5 @@
/*
* Copyright 2002-2007, Axel Dörfler, axeld@pinc-software.de.
* Copyright 2002-2008, Axel Dörfler, axeld@pinc-software.de.
* Distributed under the terms of the MIT License.
*
* Copyright 2001, Travis Geiselbrecht. All rights reserved.
@ -279,7 +279,7 @@ stack_trace(int argc, char **argv)
kprintf("stack trace for thread %ld \"%s\"\n", thread->id,
thread->name);
kprintf(" kernel stack: %p to %p\n",
kprintf(" kernel stack: %p to %p\n",
(void *)thread->kernel_stack_base,
(void *)(thread->kernel_stack_base + KERNEL_STACK_SIZE));
if (thread->user_stack_base != 0) {
@ -519,14 +519,73 @@ dump_iframes(int argc, char **argv)
}
static bool
is_calling(struct thread *thread, addr_t eip, const char *pattern,
addr_t start, addr_t end)
{
if (pattern == NULL)
return eip >= start && eip < end;
const char *symbol;
if (lookup_symbol(thread, eip, NULL, &symbol, NULL, NULL) != B_OK)
return false;
return strstr(symbol, pattern);
}
// #pragma mark -
bool
arch_debug_contains_call(struct thread *thread, const char *symbol,
addr_t start, addr_t end)
{
addr_t ebp;
if (thread == thread_get_current_thread())
ebp = x86_read_ebp();
else
ebp = thread->arch_info.current_stack.esp[2];
bool onKernelStack = true;
for (;;) {
onKernelStack = onKernelStack
&& is_kernel_stack_address(thread, ebp);
if (onKernelStack && is_iframe(thread, ebp)) {
struct iframe *frame = (struct iframe *)ebp;
if (is_calling(thread, frame->eip, symbol, start, end))
return true;
ebp = frame->ebp;
} else {
addr_t eip, nextEbp;
if (get_next_frame(ebp, &nextEbp, &eip) != B_OK
|| eip == 0 || ebp == 0)
break;
if (is_calling(thread, eip, symbol, start, end))
return true;
ebp = nextEbp;
}
if (ebp == 0)
break;
}
return false;
}
void *
arch_debug_get_caller(void)
{
// It looks like you would get the wrong stack frame here, but
// since read_ebp() is an assembler inline macro, GCC seems to
// since read_ebp() is an assembler inline macro, GCC seems to
// be smart enough to save its original value.
struct stack_frame *frame = (struct stack_frame *)x86_read_ebp();
@ -541,8 +600,10 @@ arch_debug_init(kernel_args *args)
add_debugger_command("where", &stack_trace, "Same as \"sc\"");
add_debugger_command("bt", &stack_trace, "Same as \"sc\" (as in gdb)");
add_debugger_command("sc", &stack_trace, "Stack crawl for current thread (or any other)");
add_debugger_command("iframe", &dump_iframes, "Dump iframes for the specified thread");
add_debugger_command("sc", &stack_trace,
"Stack crawl for current thread (or any other)");
add_debugger_command("iframe", &dump_iframes,
"Dump iframes for the specified thread");
add_debugger_command("call", &show_call, "Show call with arguments");
return B_NO_ERROR;

29
src/system/kernel/thread.cpp
View File

@ -21,6 +21,7 @@
#include <util/AutoLock.h>
#include <util/khash.h>
#include <arch/debug.h>
#include <boot/kernel_args.h>
#include <condition_variable.h>
#include <cpu.h>
@ -624,7 +625,7 @@ thread_exit2(void *_args)
TRACE(("thread_exit2: done removing thread from lists\n"));
if (args.death_sem >= 0)
release_sem_etc(args.death_sem, 1, B_DO_NOT_RESCHEDULE);
release_sem_etc(args.death_sem, 1, B_DO_NOT_RESCHEDULE);
// notify the debugger
if (args.original_team_id >= 0
@ -972,7 +973,7 @@ drop_into_debugger(int argc, char **argv)
kprintf("drop failed\n");
else
kprintf("thread %ld dropped into user debugger\n", id);
return 0;
}
@ -1121,6 +1122,10 @@ dump_thread_list(int argc, char **argv)
struct thread *thread;
struct hash_iterator i;
bool realTimeOnly = false;
bool calling = false;
const char *callSymbol = NULL;
addr_t callStart = 0;
addr_t callEnd = 0;
int32 requiredState = 0;
team_id team = -1;
sem_id sem = -1;
@ -1139,6 +1144,17 @@ dump_thread_list(int argc, char **argv)
if (sem == 0)
kprintf("ignoring invalid semaphore argument.\n");
}
} else if (!strcmp(argv[0], "calling")) {
if (argc < 2) {
kprintf("Need to give a symbol name or start and end arguments.\n");
return 0;
} else if (argc == 3) {
callStart = parse_expression(argv[1]);
callEnd = parse_expression(argv[2]);
} else
callSymbol = argv[1];
calling = true;
} else if (argc > 1) {
team = strtoul(argv[1], NULL, 0);
if (team == 0)
@ -1152,6 +1168,8 @@ dump_thread_list(int argc, char **argv)
while ((thread = (struct thread*)hash_next(sThreadHash, &i)) != NULL) {
// filter out threads not matching the search criteria
if ((requiredState && thread->state != requiredState)
|| (calling && !arch_debug_contains_call(thread, callSymbol,
callStart, callEnd))
|| (sem > 0 && thread->sem.blocking != sem)
|| (team > 0 && thread->team->id != team)
|| (realTimeOnly && thread->priority < B_REAL_TIME_DISPLAY_PRIORITY))
@ -1978,6 +1996,9 @@ thread_init(kernel_args *args)
" <id> - The ID of the thread.\n"
" <address> - The address of the thread structure.\n"
" <name> - The thread's name.\n", 0);
add_debugger_command_etc("calling", &dump_thread_list,
"Show all threads that have a specific address in their call chain",
"{ <symbol-pattern> | <start> <end> }\n", 0);
add_debugger_command_etc("unreal", &make_thread_unreal,
"Set realtime priority threads to normal priority",
"[ <id> ]\n"
@ -2016,7 +2037,7 @@ status_t
thread_preboot_init_percpu(struct kernel_args *args, int32 cpuNum)
{
// set up the cpu pointer in the not yet initialized per-cpu idle thread
// so that get_current_cpu and friends will work, which is crucial for
// so that get_current_cpu and friends will work, which is crucial for
// a lot of low level routines
sIdleThreads[cpuNum].cpu = &gCPU[cpuNum];
arch_thread_set_current_thread(&sIdleThreads[cpuNum]);
@ -2527,7 +2548,7 @@ thread_id
_user_find_thread(const char *userName)
{
char name[B_OS_NAME_LENGTH];
if (userName == NULL)
return find_thread(NULL);